Razorbill (Alca torda)

2020 ◽  
Author(s):  
Jennifer Lavers ◽  
J. Mark Hipfner ◽  
Gilles Chapdelaine
Keyword(s):  
Alca Torda

Razorbill Alca torda mortality in the Portuguese west coast

2018 ◽  
Vol 65 (1) ◽  
Author(s):  
R. A. Costa ◽  
A. T. Pereira ◽  
E. Costa ◽  
A. C. Henriques ◽  
J. Miodonski ◽  
...  
Keyword(s):  
West Coast ◽  
Alca Torda

scholarly journals Biometrics of Razorbills Alca torda staying during the nonbreeding season in the Polish Baltic zone

Ornis Svecica ◽  
2013 ◽  
Vol 23 (3–4) ◽  
pp. 159-163
Author(s):  
Włodzimierz Meissner ◽  
Joanna Drozdowska ◽  
Szymon Bzoma
Keyword(s):  
Baltic Sea ◽  
Wing Length ◽  
Breeding Population ◽  
Breeding Period ◽  
Clinal Variation ◽  
The Baltic Sea ◽  
Final Size ◽  
Alca Torda ◽  
Nonbreeding Season ◽  
The Baltic

Biometrical analysis of Razorbills Alca torda captured or drowned in fishing nets in the Polish economic zone of the Baltic Sea is based on measurements of 98 individuals collected in the non-breeding period (October–April) in 2006–2013. These birds are assumed to represent the breeding population of the Baltic Sea as recoveries show that very few other birds visit that area. Bill depth and wing length of juveniles were much smaller than in older birds which suggests that the final size of these measurements is not achieved during the first winter but continue to increase as the birds grow older. In older birds only total head length and bill length were significantly larger in males than in females. Mean bill depth of Razorbills from the Polish Baltic zone fits well to clinal variation from south-west to north of the European part of the breeding range. However, mean wing length was much larger than expected according to the regression, which might result from differences in measuring technique. On the other hand it cannot be excluded that the Baltic population may actually have longer wings.

NEST SITE CHARACTERISTICS AND BREEDING SUCCESS IN THE RAZORBILL ALCA TORDA

Ibis ◽  
2008 ◽  
Vol 124 (3) ◽  
pp. 355-359 ◽  
Author(s):  
P. J. HUDSON
Keyword(s):  
Breeding Success ◽  
Nest Site ◽  
Alca Torda ◽  
Site Characteristics

Origin of Canadian Razorbills (Alca torda) Wintering in the Outer Bay of Fundy Confirmed by Radio-Tracking

Waterbirds ◽  
2010 ◽  
Vol 33 (4) ◽  
pp. 541-545 ◽  
Author(s):  
Travis C. R. Clarke ◽  
Antony W. Diamond ◽  
John W. Chardine
Keyword(s):  
Bay Of Fundy ◽  
Radio Tracking ◽  
Alca Torda

Foraging behaviour and time allocation of chick-rearing Razorbills Alca torda at Graesholmen, central Baltic Sea

Ibis ◽  
2001 ◽  
Vol 143 (4) ◽  
pp. 402-412 ◽  
Author(s):  
SILVANO BENVENUTI ◽  
LUIGI DALL'ANTONIA ◽  
PETER LYNGS
Keyword(s):  
Baltic Sea ◽  
Time Allocation ◽  
Foraging Behaviour ◽  
Alca Torda

Forensic Techniques Identify the First Record of Snowy Owl (Bubo scandiacus) Feeding on a Razorbill (Alca torda)

2015 ◽  
Vol 127 (3) ◽  
pp. 503-506
Author(s):  
Carla J. Dove ◽  
Charles P. J. Coddington
Keyword(s):  
First Record ◽  
Alca Torda ◽  
Snowy Owl ◽  
Bubo Scandiacus
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